Lead Gingus back to the crash site and to Elly Nerwick. He moves slow (after all, he almost died!) and will stop moving if you get too far from him.
NOTE: There is no need to attack anything; you can use invisibility all the way back. Nothing attacks him; just you. If you cannot use invisibility spells or totems, don't use any AOE, as this will cause Gingus to aggro.